Self locking hinge



Dec. 22, 1931. G H. CHESTER SELF LOCKING HINGE Filed Sept. 26, 1929 O 1 a m i w 9 e NM ML, wa /4 m .wm wmlll i wwmlr T T mEW252 fi wigs/.525 .w/ w A Z M J fim V/ i 6 G Patented Dec. 22, 1931 UNITED STATES enononn. CHESTER, or nrcmmoma nnren'rs, mssovnr SELF LOCKING HINGE a plication fled September 26', 1929; senaljn $93,214;

This invention relates tonew and useful improvements in hinges, the objects of the invention being the provision of a hinge which is adapted to limit the opening'move' able leafmember between the's'tationa ry leafv member and an enlargement on saidpintle, thereby limiting the swinging movement of the closure member in accordance with the extent of the axial movement of said pintle member.

Still other objects ofthe invention areto provide a hinge; one member of which isprovided with a threaded bore, the pintle' member of said hinge bein'gscrew-seated in said bore, said pintle member being partially rotatable in conjunction with the closure member, thereby receiving'movem'ent in axial direction by virtue of the screw-threaded engagement and bringing an enlargement on said pintle memberin pressure contact with the movable hinge member, thereby clamping the latter in a predeterminedposition and limitin the opening movementthereof.

Further o jects of the inventionai-e t'o' form said intle adjustable longitudinallyso as to regu ate the clearance between the enlargement thereof and the removable hin e member, thereby controlling the extent 0 swinging movement of the latter."

Additional objects of the invention are to providea-hinge of simple and eflicient construction wherein the pint le member" is operable in axial direction by the movable member of the hinge te limit the'opening movement of the closure member and to provide simple means for regulating the extent oi the opening movement oi said closure mem- 1. V Wan theseiand other obiectsi'nview; my

ing drawings, which" illustrate a practical invention'consists in certain novel features of construction and arrangement of arts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 is a front elevational View of my improved hinge. A 1

Figure 2' is a top plan view of'same.

Figure 3 is an enlarged cross section showing the closure member in closed position. Figure 4 is a similar view but showingthe movable hinge member in open locked position.

Figure 5 shows a modified form of myinvention. V

Figure 6 shows still another modified form of my invention. Y s

Figure 7 shows still another modified foim of my invention.

Briefly stated, my invention consists in forming the pintle member ofthehingemo'v able in axial direction during the swinging movement of theclosure member, whereb j the movable hinge member can be clamped be tween s'aid pintle member and the stationary hinge member when said closure member is opened to a predetermined position. The pintle memberis adjustable longitudinally so as to increase or decrease the axial movement thereof-and increase or decrease the extent ofthe' opening movement of the closure member correspondingly; v f

To accomplish this'purpose; the pintle'" element has a screw-threaded engagement with the knuckle'of one of the hinge'elementsand a one of said elements is rotatable relatively to the other to= cause the axial movement of thepintlei Referring by numerals w the accompany embodiment of my invention, 10 indicates a stationary: hinge member which is secured to a frame 1 1*, and 1-2 is; the movable hinge member which is secured to a closurejmeln ber 141' Asjshownhn the preferred form (Figures; 1 to Mimmben 10 has a knuckle 10 W-hichis provided with a threadedbore 15] and movable hingemeinbe'r 12 has a knuck le I Q which is provided? with a? smooth H bowie; r

Extending through these bores, which are coaxially arranged, is a pintle member or pin 17 provided at its upper end with a head 18. This pin 17 has its lower half provided with a screw-thread, as at 17, for engagement with the threaded bore 15 of member 10. The upper half of this pin is smooth and fits loosely in the bore 16 of member 12. Pin

17 can be adjusted in bore 15 so as to provid'e sufficient clearance between head 18 and the upper end of knuckle 12 of member 12, as shown in Figure 3.

Pin 17 is held in non-rotative engagement with member 12 in any suitable manner, preferably by means of a locking member 19 which is pivotally mounted'at one end to hinge memberc12 as indicated at 20 and is movable downwardly so as to bring the free end thereof, which terminates in a downwardly presented cap 21, over the head 18. Head 18 is formed non-circular, preferably being hexagonal, and the recess formed in cap 21, is similarly formed so that said cap fits snugly over said head and holds pin 17 against rotation. Thus withmember 19 in engagement with pin 17 the latter is caused to rotate partially when the closure member is moved in open position. This partial movement of pin 17 causes the latter, by virtue of its screw-threaded engagement with bore 15, to move downwardly until the head 18 presses against the upper end of knuckle 12 and clamps the latter between said head 18 and the upper end of knuckle 10*, thereby locking the closure member against further opening movement.

When the closure member is moved in the opposite or closing direction, pin 17 is partiall rotated correspondingly, causing the hea 18 thereof to move upwardly away from the upper end of knuckle 12. I

Thus it will be seenthat the extent of the opening movement of the closure member is controlled by the clearance existing between the upper end of knuckle 12 and head 18. This clearance can be regulated by lifting member 19 out of engagement with head 18 and partially turning pin 17 by means of said head in the proper direction, either to increase or decrease the clearance between said head and-knuckle 12 whereupon member 19 is dropped into engagement with said head so as to lock said pin in non-rotative engagement with the swingable hinge member 12.

In the modified form shown in Figure 5, a in 2Q is shown having its head 25 provi ed with a vertically disposed aperture 26 adapted to receive a pin27. The lower end of this pin is adapted to be seated in an upwardly presented recess 28 formed in the open end of the movable knuckle 29.

There is a number of recesses 28 arranged in spaced relationaboutthe axis-of pin 24 and the operating clearance of the pin can be regulated by adjusting said pin or pintle 24 and bringing the locking pin 27 in the appropriate recess 28.

The modified form shown in Figure 6 shows a stationary leaf knuckle 30 having a non-circular bore 31 and a knuckle 32 of the movable leaf member having a threaded bore 33. A pintle pin 34 has its upper half threaded for engagement with threaded bore 33 and has its lower half formed non-circular in cross section for engagement with bore 31. The lower end of pin 34 has a threaded extension 35 on which is screw-seated a nut 36. Normally, or when the closure member occupies closed position, this nut 36 is spaced the appropriate distancefrom the lower end of knuckle 30. When the closure member is actuated the threaded bore 33 of knuckle 32 through its engagement with the threaded portion of thepintle causes upward movement thereof, thereby bringing nut 36 against the lower end of the stationary knuckle 30 and limiting the opening movement of the movable knuckle 32. Nut 36 can be adjusted to regulate the longitudinal movement of pintle 34:- .As pin 34 has non-rotative engagement with the stationary knuckle 30 it is held against rotative movement and is moved upwardly by the opening movement of the movable knuckle 32, thus bringing the nut 36 against the stationary knuckle and causing the movable knuckle 32 to be drawn against the upper end of the stationary knuckle.

In the modified form shown in Figure 7 the bolt 37 is locked to the hinge member 12 through the mechanism of a cap 38 which fits over the head 39 of said bolt. The interiorof this cap is non-circular in cross section to conform to the conformation of said nut and the upper end .40 of the knuckle 12", which upper end 40 is of the same contour as said nut. The cap 38 fits closely over head 39 and end 40 and locks said head against rotation. "The cap is held in position on the head by ascrew 41 which is screw-seated in the threaded opening formed-in said head and has its upper end bearing on said cap. This construction eliminates the use of pivoted caps or looking members and presents a neat appearance.

My improved hinge effectively limits the swinging movement of the closure member andalso serves as a check, as the clamping or pressure against the movable hinge member is increased gradually. The device provides a neat appearance, is inexpensive to manufacture, and is simple to install and operate.

While I have shown the preferred embodiments of my invention, it is obvious that variousother changes in the construction and arrangement of parts can be made and substituted for those herein shown without departing from the spirit of my invention.

I claim:

1. Ajself-locki'ng hinge comprising a stationary hinge member, a movable hinge member, a pintle member having a screw-threaded engagement with one of said hin e members and a loose engagement with t e other hinge member, and means for elfectin nonrotative engagement between said pint e and said last-mentioned hinge member whereby the actuation of the movable hinge member causes displacement of said pintle in axial direction and clamps said movable hinge member against said stationary hinge member during the opening movement of said movable hinge member.

2. A hinge for swinging closures comprising a stationary hinge member, a movable hinge member, a pintle extending through the knuckles of said hinge members for holding the latter in coaxial assembled relation, said pintle having a threaded engagement with the knuckle of said hinge member and being loosely and non-rotatably mounted in the knuckle of the other hinge member for movement in axial direction whereby. vthe swinging movement of the movable hinge member causes longitudinal displacement of said pintle and clamps said movable hinge member against said stationary hinge memher.

3. A hinge for swinging closures comprising in combination, a stationary hinge memher, a movable hinge member, a pintle therefor having a threaded engagement with one of said hinge members and being loosely mounted in the other hinge member for movement in axial direction, and means for locking said pintle against rotative movement relatively to the hinge member in which it is loosely mounted, said means being adapted to permit longitudinal movement of said pintle relatively to said hinge member.

In testimony whereof I hereunto alfix my signature this 5th day of September 1929. GEORGE H. oHEsTER. 

